In short
On January 10, 1920, the League of Nations officially came into existence when its Covenant took effect, establishing the first attempt at a permanent international organization designed to prevent wars through collective security and diplomacy. Created in the aftermath of World War I and headquartered in Geneva, it represented an unprecedented commitment by nations to resolve disputes peacefully rather than through military force. Though ultimately unable to prevent World War II, the League pioneered the institutional architecture that would later inform the United Nations.
How it unfolded.
The five-minute version
What actually happened.
The founding legends of the Goryeo royal family is a mythical account of the ancestral family of Wang Kŏn, who united the Korean Peninsula during the Later Three Kingdoms period and founded the Goryeo dynasty of Korea.
As it was happening
20 voices, 9793 days.
One beat at a time. Click any dot on the timeline to jump, press play for autoplay, or use the arrow keys to step.
Treaty of Versailles signed
Treaty ending World War I included the Covenant of the League of Nations as its first 26 articles, drafted by the Paris Peace Conference.
Voices from this moment (1)
Treaty of Versailles signed
Jun 28
“Treaty ending World War I included the Covenant of the…”
As it was happening
20 voices, 9793 days.
Day 0 · June 28, 1919
Treaty of Versailles signed
Treaty ending World War I included the Covenant of the League of Nations as its first 26 articles, drafted by the Paris Peace Conference.
“Treaty ending World War I included the Covenant of the…”
- Treaty of Versailles signed, Jun 28
Day 196 · January 10, 1920
League of Nations officially established
The League's Covenant takes effect with 42 founding member states. First meeting of the Assembly held in Geneva.
“The League of Nations is the deliberate purpose of every…”
- Speech to League of Nations Assembly, Geneva, Jan 10
“League of Nations Formally Established at Geneva - New…”
- The Times, Jan 10
“League of Nations Opens in Geneva as Beacon of Hope -…”
- The New York Times, Jan 10
“DE: 'Völkerbund konstituiert sich in Genf' / EN: 'League of…”
- Neue Zürcher Zeitung, Jan 10
“FR: 'La Société des Nations est constituée' / EN: 'The…”
- Le Temps, Jan 11
“Geneva's Great Experiment Begins - League Assembly Opens…”
- The Manchester Guardian, Jan 12
“The League's Covenant takes effect with 42 founding member…”
- League of Nations officially established, Jan 10
Day 202 · January 16, 1920
First Assembly convenes
Member nations gather in Geneva to establish the organization's structure and operational procedures.
“This League is a deathblow to American independence.”
- Senate floor statement, Mar 19
“We have created an instrument which, if properly used, may…”
- Interview in The Times, London, Jan 20
“Without enforcement powers and without America's full…”
- Le Temps, Paris, Feb 15
“At last Europe has dared to dream of something greater than…”
- Politiken, Copenhagen, Jan 25
“Member nations gather in Geneva to establish the…”
- First Assembly convenes, Jan 16
Day 537 · December 16, 1920
United States Senate definitively rejects League membership
Final Senate vote on League ratification fails, excluding the world's leading economic power from the organization.
“Final Senate vote on League ratification fails, excluding…”
- United States Senate definitively rejects League membership, Dec 16
Day 4465 · September 18, 1931
Mukden Incident; League's first major test
Japan invades Manchuria. League condemns invasion but cannot enforce resolution, revealing fundamental weakness in enforcement mechanisms.
“Japan invades Manchuria.”
- Mukden Incident; League's first major test, Sep 18
Day 5222 · October 14, 1933
Germany withdraws from League
Hitler's government exits the organization and the World Disarmament Conference, signaling intent to pursue unilateral military expansion.
“Hitler's government exits the organization and the World…”
- Germany withdraws from League, Oct 14
Day 5561 · September 18, 1934
Soviet Union joins League
USSR admits membership, seeking collective security against rising Nazi threat in Europe.
“USSR admits membership, seeking collective security against…”
- Soviet Union joins League, Sep 18
Day 5941 · October 3, 1935
Italy invades Ethiopia; League imposes sanctions
League condemns Mussolini's aggression and votes economic sanctions, but Italy remains undeterred and League enforcement proves ineffectual.
“League condemns Mussolini's aggression and votes economic…”
- Italy invades Ethiopia; League imposes sanctions, Oct 3
Day 7370 · September 1, 1939
Germany invades Poland; World War II begins
League proves unable to prevent or respond to Nazi aggression, validating widespread perception of organizational impotence.
“League proves unable to prevent or respond to Nazi…”
- Germany invades Poland; World War II begins, Sep 1
Day 9793 · April 20, 1946
League of Nations formally dissolved
Final Assembly meets in Geneva; League officially wound up and assets transferred to the newly established United Nations.
“Final Assembly meets in Geneva; League officially wound up…”
- League of Nations formally dissolved, Apr 20
Front pages.
3 outlets carried the story: The Times, Le Temps, The New York Times.
Media coverage
What the world was reading.
5 pieces, ranked by how much they shaped the discourse.
The Times
Newspaper · United Kingdom · Jan 10, 1920
"League of Nations Formally Established at Geneva - New World Peace Organization Opens Its Doors"
The League of Nations held its inaugural assembly in Geneva today, with representatives from 42 nations gathering to establish the machinery of international peace. The historic convocation marks mankind's boldest experiment in collective security.
- Jan 10, 1920
The New York Times
Newspaper · United States
"League of Nations Opens in Geneva as Beacon of Hope - America's Wilson Vindicated Despite U.S. Absence"
Synthesized from period reporting - Geneva witnessed the formal inauguration of the League of Nations today, a diplomatic triumph that vindicated President Woodrow Wilson's postwar vision, though the United States itself remains conspicuously absent from the assembly.
- Jan 11, 1920
Le Temps
Newspaper · France
"FR: 'La Société des Nations est constituée' / EN: 'The Society of Nations Is Constituted'"
FR: 'La première assemblée générale de la Société des Nations s'est réunie à Genève sous la présidence de Gustave Ador.' / EN: 'The first general assembly of the Society of Nations convened in Geneva under the presidency of Gustave Ador, fulfilling President Wilson's vision for lasting peace.'
- Jan 10, 1920
Neue Zürcher Zeitung
Newspaper · Switzerland
"DE: 'Völkerbund konstituiert sich in Genf' / EN: 'League of Nations Constitutes Itself in Geneva'"
DE: 'Die Schweiz empfängt heute die Vertreter einer neuen Weltordnung in ihren Mauern.' / EN: 'Switzerland today welcomes the representatives of a new world order within its borders, hosting the machinery that promises to prevent future wars through international arbitration.'
- Jan 12, 1920
The Manchester Guardian
Newspaper · United Kingdom
"Geneva's Great Experiment Begins - League Assembly Opens with Mixed Hopes and Skepticism"
Synthesized from period reporting - As the League of Nations formally convenes in Geneva, observers remain divided between those who see genuine promise for lasting peace and seasoned diplomats who question whether this body can enforce its mandates without major military powers.
Captured in time.
Captured before it changed
The web as it looked, the day it happened.
Wayback Machine snapshots of the pages people actually loaded that day. Click any card to open the archive at full size.
Sources & citations.
Sources
Where this came from.
Every claim on this page traces to a public, license-clean source. We don't asterisk well.
Wikipedia
1 source- 1.Founding legends of the Goryeo royal family
en.wikipedia.org